Egbert cowen



(No Model.

B. GOWEN. KNE'ADER FOR INDIA RUBBER, &0.

Ne. 357.700. Patented Feb. 15, 1887',

lL'T/Elflilllilfi 08wew Wiiq E 5 s e 5 W onner COWEN, OF; CAMBRIDGEBORT,

P TENT nssidnon TO THE Bosron woven HOSE COMPANY, OF BOSTON,MASs-Afifill l fil si a KN EADER FOR INDIA-RUBBER;

srncrrrca'rrou forming part of-Letters Patent No, semen. dated February15, last. Application filed July crises. serial home. (No mod m To allwhom, it may concern:

Be it known that I, ltonna'rfiownn, of- Cambridgeport, county ofMiddlcsex, and- State of Massachusetts, haveinvented an Improvbment in'Kneaders forIndia-Rubber, &c., of which the following description, inconnection with the accompanying drawings, is a specification, likeletters on the drawings representing like arts. to p This invent-ion hasfor itsobject to provide aself-feeding apparatus to be used in reducingor kneading su bstauces. My invention has for its more particular objectto provide "a continuously-operating l5 kneader to be used in kneadingor working up guttapercha or india-rubber. k x Prior to my inventiongutta-perchaer-iiidm rubber has been fed between rollers, which crush orreduce the material placed between :0 them, the said material fallingfrom between the rollers upon the floor or into asuitable re:

cepta'cle, from whence it is taken by a work man and again placedbetween the said rollers. My present invention has for its object toprovide a self feeding apparatus, and thus *make the process of kneadingindia-rubber or other material continuous, thereby dispensing with theconstant services of a workman to feed the material into the apparatus.0 My invention consists, essentially, of feedrollers, betweenwhich thegutta-percha, india rubber, or other material is passed, combined withan endless belt to receive the said material from the rollers and feedit again into the bite 'of the said rollers, as will be described.

My invention also consists of feed-rollers, between which thegutta-peroha or likematerial is passed,and an endless belt to receivethe said material from the rollers and feed itagain 0 into the bite ofthe said rollers, combined with a cleaner to remove particles ofmaterial adboring to the endless belt.

Figure lis a vertical transverse section of my' improved S81 f-fecdingkueader, the section being taken on line as w, --Fig. 2;and Fig. 2, a

top or plan view of Fig. 1. l

The sides A A, unitedby cross braces or rods a, provided with usualnuts, a, constitute a supporting-frame for the apparatus. Each side A Ais provided with alongitudinal slot, a, (see dotted lines, Fig. 1,) thesaid slot re- -sha l't b, the rollers b b through said pinion ingagainst the roller if, the said. endless belt -is carried upon the saidbelt, between it and the ceiving within it boxes I) b, which form joiir=nal-bearings for shafts bllf, respectively, the said shafts havingmounted thereon rollers-b bf. The shaft b at one side of the appalhtlishas mounted 'upon it a belt=plilley, o, ands grooved pulley, *o', and atthe opposite side of the apparatus the said shaft has neon-ten on it apinioino", in meshfiitllh .Ear, a, on the 66 and gear rotating inopposite directions.

Each side AA, as herein shown, has as cured to its top by screws e?,-.afender, o, having its sides shaped/asshown in Fig. 1, to conform to guset-inner, of the rollers b b 5 thesaidfenurs and rollers formingahopper,

. hits which the guttaperellli or indie-rubber a The guttaperchti orindiarnbher i's first fed into the hopper referred to by the workman,and is carried between the rollers. flhe iil'liia rubber as it passesfrom the rollers falls upon all-endless belt, d, passedoveraroller, dbelow and at the front end of the apparatus, the said roller beingsupportedjin bearings (1, attached to the sides A A, the said bearingsbei g herein shown as bars provided with a SQries of notches, d in oneof which the joiiiffialsbf the said roller rest. The endless belt d iscan ried below the rollers b bione sheet or fold 8c being passed arounda stationary cross-bar or roller, d", secured to the sides AA atthe rearof the apparatus, the other sheet or fold pressbeing then passed over aroller, d, having its hearings in arms (1, the said arms being pivotedor hinged, as at d", to the sides A A; 1

In operation the rollers b b are rotated, as. indicated by arrows 12,Fig; 1, bye to n the pulley c,the said belt being driven I. re rotationof a main or counter shaft, or in other well-k uown manner. Thegutta-pereha or inie-rubber or other material, in a crude state, isplaced by the workman in the hopper -referred to, where it is bitten orseized by the "rollers b b and carried betweenthem, it falling upon theupper fold of theendlessbelt d as it passes from the rollers. As thegutta-pcrolia falls from the rollers upon the endless belt d it rollerbf, to the top of the said roller, the belt moving in the directionindicated by arrow 20, Fig l. As the endless belt passes over the rollerd in the direction indicated by arrow 15 any particles of .gutta perchawhich might adhere thereto are removed therefrom by 'a. cleaner 0, shownas a brush revolving in the same direction as the roller (if, asindicated by arrow 16, the guttwpercha brought up by the'endlessbelt'and' the particles re: moved therefrom by the said cleaner being beagain passed between said rollers, the ac- ,iion of the said rollersupon the gutta-peroha' or other like material heingcontinued until thesaid material has been kneaded into a soft and pliable mass. The shaft eof the cleaner which removes the particles of material aid-- hering tothe belt has its bearings, as shown,

' on top of the sides A A, and issecured in po- 41,) the endlessjhel-tfldat such time hanging ,loosel below the rollers b b, asshown by.dotte lines.

The bearings d forthe roller d", being notched, permit the said rollerto be adj nsted inits hearings to take up any slack in the endless beltwhich might arise after the said I claim r '1. In an apparatus forkneading gutta-percha, indie-rubber, and like material, feed-rod er'sbetween which the materialis passed, combined with an endless belt toreceive the said material frointherollers, arranged across the spacebetween the said rollers and extended under and partially about one ofthe said rollers, substantially as described, whereby it again returnedto the bite of the said rollers at their receiving side, to be againacted upon by the said rollers, as and for the purpose set ort l. I

2. In an apparatus for kneading gutta-pereha, indie-rubber, and likematerial, feed-rollers'between which the material is passed; an endlessbeltto receive the said material from the rollers, arranged across thespace between the said rollers and extended under'and partially aboutone of the said rollers, substam tially as described, whereby thematerial deto the bite of thesaid rollers at their receiving side, to beagain acted upon by the said roll- 'ers', combined wit-ha cleaner toremove par ticles of material fronrthe endless belt, substantially asdescribed. i y In testimony whereof Ihave signed myname to thisspecification in the presence of two subscribing witnesses ROBERT COWEN.I

Witnesses:

G. W. GREGORY, i F. L. EMERY.

belt has been in operation for some time.

livered upon thesaid belt is by it again returned immaterial-deliveredupon the said belt is' by

